Merge branch '5.4' into 6.0

* 5.4:
  [Mailer] Document new Mailer transport options
  Flex: Update links to Symfony 5.3

Author: javiereguiluz

mailer.rst

@@ -242,6 +242,36 @@ the application or when using a self-signed certificate::
 
     $dsn = 'smtp://user:[email protected]?verify_peer=0';
 
+Other Options
+~~~~~~~~~~~~~
+
+``command``
+    Command to be executed by ``sendmail`` transport::
+
+        $dsn = 'sendmail://default?command=/usr/sbin/sendmail%20-oi%20-t'
+
+``local_domain``
+    The domain name to use in ``HELO`` command::
+
+        $dsn = 'smtps://smtp.example.com?local_domain=example.org'
+
+``restart_threshold``
+    The maximum number of messages to send before re-starting the transport. It
+    can be used together with ``restart_threshold_sleep``::
+
+        $dsn = 'smtps://smtp.example.com?restart_threshold=10&restart_threshold_sleep=1'
+
+``restart_threshold_sleep``
+    The number of seconds to sleep between stopping and re-starting the transport.
+    It's common to combine it with ``restart_threshold``::
+
+        $dsn = 'smtps://smtp.example.com?restart_threshold=10&restart_threshold_sleep=1'
+
+``ping_threshold``
+    The minimum number of seconds between two messages required to ping the server::
+
+        $dsn = 'smtps://smtp.example.com?ping_threshold=200'
+
 Creating & Sending Messages
 ---------------------------
 

setup/flex.rst

@@ -189,9 +189,9 @@ If you customize these paths, some files copied from a recipe still may contain
 references to the original path. In other words: you may need to update some things
 manually after a recipe is installed.
 
-.. _`default services.yaml file`: https://github.com/symfony/recipes/blob/master/symfony/framework-bundle/4.2/config/services.yaml
-.. _`shown in this example`: https://github.com/symfony/skeleton/blob/8e33fe617629f283a12bbe0a6578bd6e6af417af/composer.json#L24-L33
-.. _`shown in this example of the skeleton-project`: https://github.com/symfony/skeleton/blob/8e33fe617629f283a12bbe0a6578bd6e6af417af/composer.json#L44-L46
-.. _`copying Symfony's index.php source`: https://github.com/symfony/recipes/blob/master/symfony/framework-bundle/5.1/public/index.php
-.. _`copying Symfony's bin/console source`: https://github.com/symfony/recipes/blob/master/symfony/console/5.1/bin/console
+.. _`default services.yaml file`: https://github.com/symfony/recipes/blob/master/symfony/framework-bundle/5.3/config/services.yaml
+.. _`shown in this example`: https://github.com/symfony/skeleton/blob/a0770a7f26eeda9890a104fa3de8f68c4120fca5/composer.json#L30-L39
+.. _`shown in this example of the skeleton-project`: https://github.com/symfony/skeleton/blob/a0770a7f26eeda9890a104fa3de8f68c4120fca5/composer.json#L55-L57
+.. _`copying Symfony's index.php source`: https://github.com/symfony/recipes/blob/master/symfony/framework-bundle/5.3/public/index.php
+.. _`copying Symfony's bin/console source`: https://github.com/symfony/recipes/blob/master/symfony/console/5.3/bin/console
 .. _`Symfony Requirements Checker`: https://github.com/symfony/requirements-checker